▎ 摘　　要

NOVELTY - Graphene oxide/sulfur nanoparticle composite microsphere comprises 100 mg sulfur powder, 50-160 ml anhydrous ethanol, 0.6-3 g polyethylene glycol, 5-20 mg graphene oxide, and 50-200 ml deionized water and modifier. The modifier is a liquid modifier or a solid modifier. USE - Graphene oxide/sulfur nanoparticle composite microsphere used in electrode positive electrode for a battery (claimed). ADVANTAGE - The graphene oxide/sulfur nanoparticle composite microsphere has the effects of higher sulfur loading and good electrical conductivity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following: (1) a method for preparing graphene oxide/sulfur nanoparticle composite microsphere, which involves dissolving a sulfur powder in absolute ethanol under heating at 80degrees Celsius, adding polyethylene glycol under stirring and dissolving to obtain sulfur sol dispersion, dispersing graphene oxide in deionized water, adding modifier under heating and stirring at 60-90degrees Celsius for 5-9 hours to obtain nitrogen-doped graphene oxide aqueous solution, adding nitrogen-doped graphene oxide aqueous solution dropwise to the prepared sulfur sol dispersion under heating and stirring at 70-90degrees Celsius for 3-6 hours, centrifuging and washing with water, freeze-drying to obtain a composite material, putting the composite material into a weighing bottle, putting the weighing bottle into a polytetrafluoroethylene-lined autoclave, treating at a constant temperature of 155degrees Celsius for 12 hours under argon protection to obtain graphene oxide/sulfur nanoparticle composite microspheres; (2) an electrode positive electrode prepared from graphene oxide/sulfur nanoparticle composite microspheres, which comprises 50-150 mg mixed slurry and 1-2 ml N-methyl pyrrolidone, where the mixed slurry comprises 7 pts. wt. graphene oxide/sulfur nanoparticle composite microspheres, 2 pts. wt. conductive carbon black and 1 pt. wt. polyvinylidene difluoride; and (3) a method for preparing electrode positive electrode, which involves mixing graphene oxide/sulfur nanoparticle composite microspheres, conductive carbon black and polyvinylidene difluoride to prepare a mixed slurry, dispersing in N-methyl pyrrolidone, drying in a vacuum drying oven at 60degrees Celsius for 12 hours, cutting into a circle with a diameter of 12 mm to obtain the positive electrode of the battery.